[igt-dev] [PATCH i-g-t] i915/gem_request_retire: Switch from random blitter loads to dummy
Chris Wilson
chris at chris-wilson.co.uk
Mon Nov 30 10:36:56 UTC 2020
Use the spinners to provide exactly the right amount of background
busyness.
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin at linux.intel.com>
---
lib/igt_dummyload.c | 23 ++---
lib/igt_dummyload.h | 1 +
tests/i915/gem_request_retire.c | 170 ++++----------------------------
3 files changed, 34 insertions(+), 160 deletions(-)
diff --git a/lib/igt_dummyload.c b/lib/igt_dummyload.c
index d58f73108..891e4eaab 100644
--- a/lib/igt_dummyload.c
+++ b/lib/igt_dummyload.c
@@ -161,19 +161,20 @@ emit_recursive_batch(igt_spin_t *spin,
if (opts->dependency) {
igt_assert(!(opts->flags & IGT_SPIN_POLL_RUN));
- r = &relocs[obj[BATCH].relocation_count++];
-
- /* dummy write to dependency */
obj[SCRATCH].handle = opts->dependency;
obj[SCRATCH].offset = addr;
- obj[SCRATCH].flags = EXEC_OBJECT_WRITE;
-
- r->presumed_offset = obj[SCRATCH].offset;
- r->target_handle = obj[SCRATCH].handle;
- r->offset = sizeof(uint32_t) * 1020;
- r->delta = 0;
- r->read_domains = I915_GEM_DOMAIN_RENDER;
- r->write_domain = I915_GEM_DOMAIN_RENDER;
+ if (!(opts->flags & IGT_SPIN_SOFTDEP)) {
+ obj[SCRATCH].flags = EXEC_OBJECT_WRITE;
+
+ /* dummy write to dependency */
+ r = &relocs[obj[BATCH].relocation_count++];
+ r->presumed_offset = obj[SCRATCH].offset;
+ r->target_handle = obj[SCRATCH].handle;
+ r->offset = sizeof(uint32_t) * 1020;
+ r->delta = 0;
+ r->read_domains = I915_GEM_DOMAIN_RENDER;
+ r->write_domain = I915_GEM_DOMAIN_RENDER;
+ }
execbuf->buffer_count++;
} else if (opts->flags & IGT_SPIN_POLL_RUN) {
diff --git a/lib/igt_dummyload.h b/lib/igt_dummyload.h
index 6d3e65ce2..b8baaa6b4 100644
--- a/lib/igt_dummyload.h
+++ b/lib/igt_dummyload.h
@@ -71,6 +71,7 @@ struct igt_spin_factory {
#define IGT_SPIN_NO_PREEMPTION (1 << 4)
#define IGT_SPIN_INVALID_CS (1 << 5)
#define IGT_SPIN_USERPTR (1 << 6)
+#define IGT_SPIN_SOFTDEP (1 << 7)
igt_spin_t *
__igt_spin_factory(int fd, const struct igt_spin_factory *opts);
diff --git a/tests/i915/gem_request_retire.c b/tests/i915/gem_request_retire.c
index 31fb41987..c23ddfb7b 100644
--- a/tests/i915/gem_request_retire.c
+++ b/tests/i915/gem_request_retire.c
@@ -52,130 +52,6 @@
IGT_TEST_DESCRIPTION("Collection of tests targeting request retirement code"
" paths.");
-#define WIDTH 4096
-#define HEIGHT 4096
-#define BO_SIZE (WIDTH * HEIGHT * sizeof(uint32_t))
-
-static uint32_t
-blit(int fd, uint32_t dst, uint32_t src, uint32_t ctx_id)
-{
- const unsigned int copies = 1000;
- uint32_t batch[12 * copies + 5];
- struct drm_i915_gem_relocation_entry reloc[2 * copies];
- struct drm_i915_gem_exec_object2 obj[3];
- struct drm_i915_gem_execbuffer2 exec;
- uint32_t handle;
- unsigned int i = 0, j, r = 0;
-
- for (j = 0; j < copies; j++) {
- reloc[r].target_handle = dst;
- reloc[r].delta = 0;
- reloc[r].offset = (i + 4) * sizeof(uint32_t);
- reloc[r].presumed_offset = 0;
- reloc[r].read_domains = I915_GEM_DOMAIN_RENDER;
- reloc[r].write_domain = I915_GEM_DOMAIN_RENDER;
-
- r++;
-
- reloc[r].target_handle = src;
- reloc[r].delta = 0;
- reloc[r].offset = (i + 7) * sizeof(uint32_t);
- if (intel_gen(intel_get_drm_devid(fd)) >= 8)
- reloc[r].offset += sizeof(uint32_t);
- reloc[r].presumed_offset = 0;
- reloc[r].read_domains = I915_GEM_DOMAIN_RENDER;
- reloc[r].write_domain = 0;
-
- r++;
-
- batch[i++] = XY_SRC_COPY_BLT_CMD |
- XY_SRC_COPY_BLT_WRITE_ALPHA |
- XY_SRC_COPY_BLT_WRITE_RGB;
- if (intel_gen(intel_get_drm_devid(fd)) >= 8)
- batch[i - 1] |= 8;
- else
- batch[i - 1] |= 6;
-
- batch[i++] = (3 << 24) | /* 32 bits */
- (0xcc << 16) | /* copy ROP */
- WIDTH*4;
- batch[i++] = 0; /* dst x1,y1 */
- batch[i++] = (HEIGHT << 16) | WIDTH; /* dst x2,y2 */
- batch[i++] = 0; /* dst reloc */
- if (intel_gen(intel_get_drm_devid(fd)) >= 8)
- batch[i++] = 0;
- batch[i++] = 0; /* src x1,y1 */
- batch[i++] = WIDTH*4;
- batch[i++] = 0; /* src reloc */
- if (intel_gen(intel_get_drm_devid(fd)) >= 8)
- batch[i++] = 0;
- }
-
- batch[i++] = MI_BATCH_BUFFER_END;
-
- while (i % 4)
- batch[i++] = MI_NOOP;
-
- handle = gem_create(fd, sizeof(batch));
- gem_write(fd, handle, 0, batch, sizeof(batch));
-
- memset(obj, 0, sizeof(obj));
- memset(&exec, 0, sizeof(exec));
-
- obj[exec.buffer_count++].handle = dst;
- if (src != dst)
- obj[exec.buffer_count++].handle = src;
- obj[exec.buffer_count].handle = handle;
- obj[exec.buffer_count].relocation_count = 2 * copies;
- obj[exec.buffer_count].relocs_ptr = to_user_pointer(reloc);
- exec.buffer_count++;
- exec.buffers_ptr = to_user_pointer(obj);
-
- exec.batch_len = i * sizeof(uint32_t);
- exec.flags = I915_EXEC_BLT;
- i915_execbuffer2_set_context_id(exec, ctx_id);
-
- gem_execbuf(fd, &exec);
-
- return handle;
-}
-
-static uint32_t
-noop(int fd, uint32_t src, uint32_t ctx_id)
-{
- uint32_t batch[4];
- struct drm_i915_gem_exec_object2 obj[2];
- struct drm_i915_gem_execbuffer2 exec;
- uint32_t handle;
- unsigned int i = 0;
-
- batch[i++] = MI_NOOP;
- batch[i++] = MI_BATCH_BUFFER_END;
- batch[i++] = MI_NOOP;
- batch[i++] = MI_NOOP;
-
- handle = gem_create(fd, 4096);
- gem_write(fd, handle, 0, batch, sizeof(batch));
-
- memset(obj, 0, sizeof(obj));
- memset(&exec, 0, sizeof(exec));
-
- obj[exec.buffer_count++].handle = src;
- obj[exec.buffer_count].handle = handle;
- obj[exec.buffer_count].relocation_count = 0;
- obj[exec.buffer_count].relocs_ptr = to_user_pointer(0);
- exec.buffer_count++;
- exec.buffers_ptr = to_user_pointer(obj);
-
- exec.batch_len = i * sizeof(uint32_t);
- exec.flags = I915_EXEC_RENDER;
- i915_execbuffer2_set_context_id(exec, ctx_id);
-
- gem_execbuf(fd, &exec);
-
- return handle;
-}
-
/*
* A single bo is operated from batchbuffers submitted from two contexts and on
* different rings.
@@ -185,37 +61,33 @@ noop(int fd, uint32_t src, uint32_t ctx_id)
static void
test_retire_vma_not_inactive(int fd)
{
- uint32_t ctx_id;
- uint32_t src, dst;
- uint32_t blit_bb, noop_bb;
-
- igt_require(HAS_BLT_RING(intel_get_drm_devid(fd)));
+ struct intel_execution_engine2 *e;
- ctx_id = gem_context_create(fd);
+ igt_spin_t *bg = NULL;
- /* Create some bos batch buffers will operate on. */
- src = gem_create(fd, BO_SIZE);
- dst = gem_create(fd, BO_SIZE);
+ __for_each_physical_engine(fd, e) {
+ igt_spin_t *spin;
+ uint32_t ctx;
- /* Submit a long running batch. */
- blit_bb = blit(fd, dst, src, 0);
+ if (!bg) {
+ bg = igt_spin_new(fd, .engine = e->flags);
+ continue;
+ }
- /* Submit a quick batch referencing the same object. */
- noop_bb = noop(fd, src, ctx_id);
+ ctx = gem_context_clone_with_engines(fd, 0);
+ spin = igt_spin_new(fd, ctx,
+ .engine = e->flags,
+ .dependency = bg->handle,
+ .flags = IGT_SPIN_SOFTDEP);
+ gem_context_destroy(fd, ctx);
+ igt_spin_end(spin);
- /* Wait for the quick batch to complete. */
- gem_sync(fd, noop_bb);
- gem_close(fd, noop_bb);
-
- /* Now destroy the context in which the quick batch was submitted. */
- gem_context_destroy(fd, ctx_id);
-
- /* Wait for the slow batch to finish and clean up. */
- gem_sync(fd, blit_bb);
- gem_close(fd, blit_bb);
+ gem_sync(fd, spin->handle);
+ igt_spin_free(fd, spin);
+ }
- gem_close(fd, src);
- gem_close(fd, dst);
+ igt_drop_caches_set(fd, DROP_RETIRE);
+ igt_spin_free(fd, bg);
}
int fd;
--
2.29.2
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